| /* Compiler options: |
| #notarget: cris*-*-elf |
| #cc: additional_flags=-pthread |
| #output: abbb ok\n |
| |
| Testing a signal handler corner case. */ |
| |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <signal.h> |
| #include <pthread.h> |
| |
| static void * |
| process (void *arg) |
| { |
| write (2, "a", 1); |
| write (2, "b", 1); |
| write (2, "b", 1); |
| write (2, "b", 1); |
| return NULL; |
| } |
| |
| int ok = 0; |
| volatile int done = 0; |
| |
| void |
| sigusr1 (int signum) |
| { |
| if (signum != SIGUSR1 || !ok) |
| abort (); |
| done = 1; |
| } |
| |
| int |
| main (void) |
| { |
| int retcode; |
| pthread_t th_a; |
| void *retval; |
| sigset_t sigs; |
| |
| if (sigemptyset (&sigs) != 0) |
| abort (); |
| |
| retcode = pthread_create (&th_a, NULL, process, NULL); |
| if (retcode != 0) |
| abort (); |
| |
| if (signal (SIGUSR1, sigusr1) != SIG_DFL) |
| abort (); |
| if (pthread_sigmask (SIG_BLOCK, NULL, &sigs) != 0 |
| || sigaddset (&sigs, SIGUSR1) != 0 |
| || pthread_sigmask (SIG_BLOCK, &sigs, NULL) != 0) |
| abort (); |
| if (pthread_kill (pthread_self (), SIGUSR1) != 0 |
| || sched_yield () != 0 |
| || sched_yield () != 0 |
| || sched_yield () != 0) |
| abort (); |
| |
| ok = 1; |
| if (pthread_sigmask (SIG_UNBLOCK, NULL, &sigs) != 0 |
| || sigaddset (&sigs, SIGUSR1) != 0 |
| || pthread_sigmask (SIG_UNBLOCK, &sigs, NULL) != 0) |
| abort (); |
| |
| if (!done) |
| abort (); |
| |
| retcode = pthread_join (th_a, &retval); |
| if (retcode != 0) |
| abort (); |
| fprintf (stderr, " ok\n"); |
| return 0; |
| } |